Submergible motor.



A. G. DUEDIN, JB. SUBMEBGIBLE MOTOR.

APPLIoATIon Hmm un 1s. 190s.

ITED STATES PATENT ormscn AUGUSTUS C. DURDIN, JR., 'O'F CHICAGO, ILLINOIS, ASSIGNOR OF THIRTY-FIVE ONE-HUN- DREDTHS T0 MAURICE I. WEIL, OF CHICAGO, ILLINOIS.

SUBMERGIBILE Moron.

Specification of Letters Patent.

Patented Aug. 1o, 1909.

Application led May 18, 1908. Serial No. 433,855.

To all 'wwm 'it may concern:

xBe it. known that-l, Aifcus'rus C. DinunN, Jr., a citizen of the United States, residing at Chicago, in the county of Gook'and State ,"f Illinois, have invented certain new and useful Improvements in Sublnergible Motors, of which the following is a specifica-tion.

.My invention relates to certain new and useful inventions in'submergible motors and the object of the `invention is to provide a motor, in combination with a hood` or casing adapted to form an air chamber around the motor, whereby the device may be submerged in a.v body of water without endangering the motor itself.

To such end this invention consists in providing an air chamber around a motor, and to the other several novel features which will be fully described in this specification and more definitely pointed out in the claims appended hereto.

T he invention is clearlyH illustrated in the drawing furnished herewith in which- Figure 1 is a view partly in side elevation and partly in central vertical section, showing a device containing my :improvements and Fig. 2 is a horizontal section takenon Athe line 2--2 Fig. 1.

Referring to these drawings 10, represents an electric motor of any well known type, which contains the usual field magnets 11, pole pieces 12, and armature 13. The pole pieces are carried by a shell, 14, which is connected at the top. and bottom by spiders 15, 16, the lower spider 16,having downwardly extending legs 17, adapted to be supported upon a suitable base 18. The armature is mounted upon a shaft 19, which is journaled in suitable bearin s carried by the spiders 15, 16, and said sha extends down below the base to a suitable point,where it is employed to drive a pump-20. This'pump may be of any well known type and the form indicated in the drawing represents a centrifugal pump having an intake 21, and a discharge casing 22, ern tying into a' discharge ipe 23. y Devices o this character thus scribed are frequently employed to pump out flooded basements, cisterns, wells or the be employed wherever it is desired to remove a body of water. Occasionally the water inthe well rises up to a point where the motor is completely submerged and an the tield magnets and arimiture or any other vulnerable parts of the motor. This shell ory casing. provides an air chamber which surrounds the motor, thus allowing a free circulation of air around the entire motor; air may also pass through the motor and around the armature, thus serving to cool the motor. The hood 24, is supported upon the motor as by means of spring clips 25, that are' secured to the motor and said clips contain recessed portions 2G, that engage with a fiange 2T. which is formed upon a'ring 28, secured to the hood. 'lhese spring clips extend downwardly from their points of support at a slight angle so as to engage witli.t.he fiange 27. A plurality of spacing clips 2l), are secured to the hood near its upper end. which clips bear aga-inst the outer face of the motor and space the upper part. of the. hood away from the motor. v

In operation, the motor drives the pump 20, and pumps the'water up through the discharge pipe 23, from which it may be conducted away in any desirable manner. If now for any reason the water suddenly rises above the motor 10, the air within the hood will be compressed by the upward pressure of the water whiich enters thehood, and it will be impossible for the water to reach a point hi her than the s ider 16,. unless-the surroun ing water shou d reach a height of ten or eleven feet above the motor, and ascharacter where the device may be employed, like, and it is quite obvious that they may' where at the present time it 1s necessary to place the motor at a great height above the pump.

The advantages of this device are readily apparent. The ordinary air cooled motor down below the bottom of vsuitable means for can be employed in positions where, heretotore 1t .could not, because of the danger of being burned out by the rise of the level of i the water to a point above the motor. The hood may be readily removed if it is neces sary to get at the motor itself and is replaced by merely slipping it over the motor until the flange 24, engages with the recessed porthe bottom to the outer atmosphere.

2. In a device of the class described, the

f combination with a motor, of means for insulating the motor away from water when said motor is submerged,- comprising a re movable hood which is open .to the outer atmosphere solely at the bottom, and which surrounds the top and sides of the motor to provide an air chamber completely surrounding the motor.

3. In a device of the class described, the combination with an air cooled motor, of means for insulating the motor away from -water when said motor is submerged, comprising a hood open to the outer atmosphere' solely at its bottom and surrounding the motor on its top and sides, and extending the motor and supporting the hood upon the motor. l

4. In a device of the class described, the combination with an electric motor having a vertically extending shaft, of means for insulating the motor away from water when said motor is submerged, comprising a re movable hood which opens to the outer atmosphere solely at its bottom, said hood surrounding the top and sides of the motor to form an air chamber about the motor.

In a device of the class described, the combination with a motor, of a hood surrounding said motor and adapted to form an air chamber about the same and spring clips for positioning and securing said hood upon the motor. l

6. In a device of the classdescribed, the combination with an air cooled motor, of a hood surrounding said motor to form an air chamber about said motor, and hood supporting clips secured upon said motor.

7. In a device of the class described, the combination with a pump driving motor,of a hood surrounding said motor to form an air chamber about said motor, a hanged ring secured upon the lower -edge of said hood and recessed spring clips secured upon the motor and engaging said flanged ring to support. the hood in spaced'relation with the motor.

8. In a device of the class described, the combination with a vertically extending pump driving motor, of a hood surrounding said motor to form an air chamber about said lnotor, clips for spacing the upper portion of the hood away from the motor and supporting clips for connecting and supporting the lower end of the hood upon the motor. I

9. In. a device of the class described, a motor having a hood which surrounds the motor on its top and sides,to form an air chamber which completely surrounds the motor, said hood being air tight above the lowest part of the vulnerablel parts of the motor, and extending down below said vulnerable parts and containlng an openinglto the outer atmosphere in said downward eX- tension. f

In witness whereof I have executed the above application this 12th day of May, 1908,

at- Chicago, county of Cook and State of.

Illinois.

AUGUSTUS C. DURDIN, JR. lVitnesses:

CHARLES O. SHPavnY, FANNIE F. RICHARDS. 

